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EpetraExt_Reindex_LinearProblem2.cpp
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41 
43 
46 
47 #include <Epetra_LinearProblem.h>
48 #include <Epetra_CrsMatrix.h>
49 #include <Epetra_MultiVector.h>
50 #include <Epetra_Map.h>
51 
52 namespace EpetraExt {
53 
56 {
57  if( newObj_ ) delete newObj_;
58 
59  if( MatTrans_ ) delete MatTrans_;
60  if( LHSTrans_ ) delete LHSTrans_;
61  if( RHSTrans_ ) delete RHSTrans_;
62 
63  if( NewRowMapOwned_ ) delete NewRowMap_;
64 }
65 
69 {
70  // Save original object
71  origObj_ = &orig;
72 
73  Epetra_CrsMatrix * OldMatrix = dynamic_cast<Epetra_CrsMatrix*>( orig.GetMatrix() );
74  Epetra_MultiVector * OldRHS = orig.GetRHS();
75  Epetra_MultiVector * OldLHS = orig.GetLHS();
76  const Epetra_BlockMap & OldRowMap = OldMatrix->Map();
77 
78  //If new map not passed in create one with lex ordering
79  if( !NewRowMap_ )
80  {
81  int NumMyElements = OldRowMap.NumMyElements();
82 
83 #ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
84  if(OldRowMap.GlobalIndicesInt()) {
85  int NumGlobalElements = OldRowMap.NumGlobalElements();
86  NewRowMap_ = new Epetra_Map( NumGlobalElements, NumMyElements, 0, OldRowMap.Comm() );
87  }
88  else
89 #endif
90 #ifndef EPETRA_NO_64BIT_GLOBAL_INDICES
91  if(OldRowMap.GlobalIndicesLongLong()) {
92  long long NumGlobalElements = OldRowMap.NumGlobalElements64();
93  NewRowMap_ = new Epetra_Map( NumGlobalElements, NumMyElements, 0LL, OldRowMap.Comm() );
94  }
95  else
96 #endif
97  throw "LinearProblem_Reindex2::operator(): GlobalIndices type unknown";
98  NewRowMapOwned_ = true;
99  }
100 
104 
105  Epetra_CrsMatrix * NewMatrix = &((*MatTrans_)( *OldMatrix ));
106  Epetra_MultiVector * NewLHS = &((*LHSTrans_)( *OldLHS ));
107  Epetra_MultiVector * NewRHS = &((*RHSTrans_)( *OldRHS ));
108 
109  newObj_ = new Epetra_LinearProblem( NewMatrix, NewLHS, NewRHS );
110 
111  return *newObj_;
112 }
113 
115 {
116  Epetra_MultiVector * OldRHS = origObj_->GetRHS();
117  Epetra_MultiVector * OldLHS = origObj_->GetLHS();
118 
119  // Clean up x and b before creating new multivectors
120  delete (newObj_->GetLHS());
121  delete (newObj_->GetRHS());
122 
123  // Create new multivectors that view into the current LHS / RHS
124  Epetra_MultiVector * NewLHS = &((*LHSTrans_)( *OldLHS ));
125  Epetra_MultiVector * NewRHS = &((*RHSTrans_)( *OldRHS ));
126 
127  // Set the new LHS / RHS
128  newObj_->SetLHS( NewLHS );
129  newObj_->SetRHS( NewRHS );
130 
131  return true;
132 }
133 
134 } //namespace EpetraExt
135 
int NumGlobalElements() const
bool GlobalIndicesLongLong() const
long long NumGlobalElements64() const
bool fwd()
Forward transfer of data from orig object input in the operator() method call to the new object creat...
bool GlobalIndicesInt() const
int NumMyElements() const
NewTypeRef operator()(OriginalTypeRef orig)
Constructs a new view the original LP, &quot;reindexed&quot; using the given NewRowMap.
const Epetra_Comm & Comm() const
Given an Epetra_CrsMatrix, a &quot;reindexed&quot; version is returned based on the new row map...
Given an input Epetra_MultiVector, a &quot;reindexed&quot; view is returned.
const Epetra_BlockMap & Map() const